Question

plazzzz answer
$(x + y)^3 - (x - y) ^{3}$

Answer 1

x³+y³+3xy(x+y)-[x³-y³-3xy(x-y)]

= x³+y³+3x²y+3xy²-[x³-y³-3x²y+3xy²]

= x³+y³+3x²y+3xy²-x³+y³+3x²y-3xy²

= 2y²+6x²y